These are the NVZ boundaries which apply from January 2017, but are subject to appeals

Surface Waters - areas of land that drain into a freshwater water body which has or could have is action is not taken, a nitrate concentration greater than 50mg/l

Groundwater - water held underground in the soil or in pores and crevices in rock, which has or could have if action is not taken, a nitrate concentration greater than 50mg/l

Eutropic Waters - bodies of water, mainly lakes and estuaries, that are or may become enriched by nitrogen compounds which cause a growth of algae and other plant life that unbalances the quality of the water and to organisms present in the water .